Manual Pages for UNIX Operating System command usage for man isnormal

Mathematical Library Functions                       isnormal(3M)



NAME
     isnormal - test for a normal value

SYNOPSIS
     c99 [ flag... ] file... -lm [ library... ]
     #include 

     int isnormal(real-floating x);


DESCRIPTION
     The isnormal() macro determines whether its  argument  value
     is  normal  (neither  zero,  subnormal,  infinite, nor NaN).
     First, an argument represented in a format  wider  than  its
     semantic type is converted to its semantic type. Then deter-
     mination is based on the type of the argument.

RETURN VALUES
     The isnormal() macro returns a non-zero value if and only if
     its argument has a normal value.

ERRORS
     No errors are defined.

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|
    | Standard                    | See standards(5).           |
    |_____________________________|_____________________________|


SEE ALSO
     fpclassify(3M),    isfinite(3M),    isinf(3M),    isnan(3M),
     math.h(3HEAD), signbit(3M), attributes(5), standards(5)











SunOS 5.11          Last change: 12 Jul 2006                    1